FluorineDog opened a new issue #236:
URL: https://github.com/apache/datasketches-cpp/issues/236
```c++
#include <iostream>
#include <kll_sketch.hpp>
using namespace datasketches;
using namespace std;
int main()
{
using T = int8_t;
kll_sketch<T> kll;
int N = 3;
kll.update(-8);
kll.update(-8);
kll.update(-8);
auto blob = kll.serialize();
std::cout << "blobsize=" << blob.size() << std::endl;
auto kll2 = kll_sketch<T>::deserialize(blob.data(), blob.size());
return 0;
}
```
will lead to
> libc++abi: terminating with uncaught exception of type std::out_of_range:
Insufficient buffer size detected: bytes available 29, minimum needed 32
Seems that `ensure_minimum_memory(size, 1ULL << preamble_ints);` in
`kll_sketch_impl.hpp:578` is incorrect.
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